Purification process of aliphatic polyester

专利名称：Purification process of aliphatic polyester发明人：Suizu, Hiroshi,Takagi, Masatoshi,Ajioka,

Masanobu,Yamaguchi, Akihiro

申请号：EP94114635.9申请日：19940916公开号：EP04219A1公开日：19950322

摘要：The invention is a purification process of an aliphatic polyester prepared in thepresence of a catalyst from a hydroxycarboxylic acid or a cyclic ester of a

hydroxycarboxylic acid, or a combination of an aliphatic polyhydric alcohol with analiphatic polybasic acid, or a mixture of these compounds, comprising deactivating thecatalyst while maintaining the aliphatic polyester in a molten or dissolved state, orinsolubilizing and separating the catalyst and successively removing low molecularcompounds; and can provide aliphatic polyester which has a low content of unreactedmonomers and low molecular weight compounds and is excellent in heat resistance andweatherability.

申请人：MITSUI TOATSU CHEMICALS, Inc.

地址：2-5 Kasumigaseki 3-chome Chiyoda-Ku Tokyo 100 JP

国籍：JP

代理机构：Strehl Schübel-Hopf Groening & Partner

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